Power Fist 8664385 User manual

V 4.0 8664385
Please read and understand all instructions before use. Retain this manual for
future reference.
User Manual
1.6GPM@1,950PSI
GasPressureWasher

8664385 1.6 GPM @ 1,950 PSI Gas Pressure Washer V 4.0
2 For technical questions call 1-800-665-8685
SPECIFICATIONS
Type Gas Pressure Washer
Max. Pressure 1,950 PSI
Max. Flow 1.6 GPM
Engine Type Powerfist
Engine Displacement 180cc
Fuel Type Gasoline
Pump Type Axial
Max. Inlet Water Temperature 60°C (140°F)
Adjustable Pressure Fixed
Chemical Injector Type Downstream Fixed
Thermal Relief Valve Yes
Gun and Wand Front Entry Gun with 16 in. Wand
Nozzle Type Quick Coupler
Nozzle Sizes Soap, 0°, 25°
Hose 25 ft of 1/4 in. PVC High Pressure Hose
Hose Reel No
Cart Frame Painted Steel
INTRODUCTION
The 1.6 GPM Gas Pressure Washer is great for washing your car, sidewalk, lawn
mower and other home applications. The pressure washer has an 180cc
Powerfist OHV gas engine, a 25 ft lightweight PVC hose and three quick couple
nozzles that attach to the pressure washer chassis for easy access. A chemical
injector is included for the application of soaps and degreasers.
1.6GPM@1,950PSI
GasPressureWasher

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A separate manual for the gasoline engine is included. Please read the Engine
manual before using this product. The Engine manual is considered accurate
when information about the engine disagrees with this manual
SAFETY
WARNING! Read and understand all instructions before using this tool. The
operator must follow basic precautions to reduce the risk of personal injury
and/or damage to the equipment.
Keep this manual for safety warnings, precautions, operating or inspection and
maintenance instructions.
HAZARD DEFINITIONS
Please familiarize yourself with the hazard notices found in this manual. A notice
is an alert that there is a possibility of property damage, injury or death if certain
instructions are not followed.
DANGER! This notice indicates an immediate and specific hazard that will
result in severe personal injury or death if the proper precautions
are not taken.
WARNING! This notice indicates a specific hazard or unsafe practice that
could result in severe personal injury or death if the proper
precautions are not taken.
CAUTION! This notice indicates a potentially hazardous situation that may result
in minor or moderate injury if proper practices are not taken.
NOTICE! This notice indicates that a specific hazard or unsafe practice will
result in equipment or property damage, but not personal injury.
WORK AREA
1. Operate in a safe work environment. Keep your work area clean, well-lit
and free of distractions.
2. Keep anyone not wearing the appropriate safety equipment away from the
work area.

8664385 1.6 GPM @ 1,950 PSI Gas Pressure Washer V 4.0
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3. Store unused tools properly in a safe and dry location to prevent rust or
damage. Lock tools away and keep out of the reach of children.
4. Do not install or use in the presence of flammable gases, dust or liquids.
5. Position the pressure washer so that the hose does not cross traffic areas,
to prevent damage and excessive hose wear.
PERSONAL SAFETY
WARNING! Wear personal protective equipment approved by the Canadian
Standards Association (CSA) or American National Standards Institute (ANSI).
PERSONAL PROTECTIVE EQUIPMENT
1. Always wear impact safety goggles that provide front and side protection
for the eyes. Eye protection equipment should comply with CSA Z94.3-07
or ANSI Z87.1 standards based on the type of work performed.
2. Wear gloves that provide protection based on the work materials or to
reduce the effects of tool vibration.
3. Wear protective clothing designed for the work environment and tool.
4. Non-skid footwear is recommended to maintain footing and balance in the
work environment.
PERSONAL PRECAUTIONS
Control the tool, personal movement and the work environment to avoid
personal injury or damage to tool.
1. Do not operate any tool when tired or under the influence of drugs, alcohol
or medications.
2. Avoid wearing clothes or jewelry that can become entangled with the
moving parts of a tool. Keep long hair covered or bound.
3. Do not overreach when operating a tool. Proper footing and balance
enables better control in unexpected situations.
4. Securely hold this tool using both hands. Using a tool with only one hand
can result in loss of control.

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SPECIFIC SAFETY PRECAUTIONS
WARNING! DO NOT let comfort or familiarity with product (gained from
repeated use) replace strict adherence to the tool safety rules. If you use
this tool unsafely or incorrectly, you can suffer serious personal injury.
1. Use the correct tool for the job. This tool was designed for a specific function.
DO NOT modify or alter this tool or use it for an unintended purpose.
2. NEVER defeat the safety features of this product.
3. NEVER leave the pressure washer unattended once you have started it. If
you must leave, follow complete shutdown instructions to prevent
inexperienced personnel from operating the machine.
4. Always operate the pressure washer from a stable surface. Avoid using the
pressure washer from precarious locations such as ladders or scaffolding.
5. Using a pressure washer can create puddles and slippery surfaces. The
work area should have adequate slopes and drainage to reduce the
possibility of falling due to slips.
6. This pressure washer is capable of producing pressures up to 1,950 PSI.
To avoid property damage and personal injury, do not operate the pump
with components rated for less than 2,000 PSI working pressure.
7. DO NOT attempt to repair damaged or defective high-pressure hoses.
Always replace them.
8. DO NOT repair leaking connections with sealant of any kind. Replace the O-
ring or seal.
9. DO NOT disconnect the high-pressure hose from the pump and spray gun
while the system is pressurized.
10. Always ensure that the spray gun, nozzles, hoses and fittings are correctly
attached before starting the engine.
11. DO NOT plug this pressure water into a hot water supply. This pressure washer
is designed for cold water use only. Water over 140 °F can damage the pump.
12. Prior to starting the pressure washer in cold weather, be sure ice has not
formed in any part of the equipment.
13. Ensure the pressure washer is not covered during operation to avoid
overheating the motor.

8664385 1.6 GPM @ 1,950 PSI Gas Pressure Washer V 4.0
6 For technical questions call 1-800-665-8685
14. If connecting the pressure washer to a portable water system, ensure the
water system is protected against backflow.
15. Use only hose and high pressure accessories rated for pressure higher
than your pressure washer's PSI.
16. Do not allow the pump to run for more than 3 minutes without using the
wand to relieve pressure. The build up of excess heat and pressure can
damage the pump.
SPRAYING PRECAUTIONS
DANGER! The pressure washer produces fluid pressures and velocities
strong enough to penetrate human and animal flesh that will result in
serious injury or amputation with some nozzles. NEVER aim the pressure
washer spray gun in the direction of people, animals or plants, even if the
power and water supply are turned off. High velocity fluid spray can cause
objects to break, propelling particles at high speeds.
WARNING! NEVER do the following while the pressure washer is in operation
or under pressure: place a body part in front of the nozzle, grasp the
hose/fittings, replace the wand or nozzle. Pressurized water could escape
and inflict an injury or cause an amputation.
1. Keep operating area clear of all persons, animals and obstacles.
2. DO NOT spray flammable or toxic liquids.
3. DO NOT spray near a power source.
4. NEVER use a spray gun which does not have a trigger lock or trigger guard in
place and in working order.
5. DO NOT lock the spray gun in the open position.
6. Be careful when squeezing the trigger, as recoil from the spray gun can cause
the operator to fall.
7. Always be certain the spray gun, nozzles and accessories are correctly attached.
8. To relieve system pressure, shut off the engine, turn off the water supply and
pull the spray gun trigger until the water stops flowing.
9. Always aim the spray gun in safe direction and squeeze trigger to release high
pressure when you stop the engine.
10. Keep a high pressure hose connected to the pump and spray gun while the
system is pressurized.

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INJECTION INJURY
DANGER! Seek immediate, professional medical treatment if fluid
penetrates your skin. It may feel like a pricking or sting. Do not wait for the
appearance of symptoms. A toxic reaction can occur from the exposure.
Delay in treatment can lead to amputation or death.
Inform the medical staff that you have a fluid penetration injury as soon as you
arrive at the medical facility. The severity of the symptoms will depend on the
type of fluid injected. Bring the Safety Data Sheet for the fluid with you to the
medical facility if possible.
INJECTION PRECAUTIONS
Fluid can penetrate the skin at 100 PSI pressure. Fluid escaping under pressure
from the tool has sufficient force to penetrate your clothing and skin. Follow the
precautions below to avoid an injection injury.
1. Always check for leaks wearing a face shield, safety goggles, rubberized
gloves and protective clothes.
2. Release all pressure from the system before you inspect it.
3. Replace damaged parts with identical manufacturer's components to
ensure it is rated to handle the pressure.
4. Do not use your hands to detect a fluid leak. Use a large piece of wood,
cardboard or paper and watch for discolouration.
RISK OF CHEMICAL BURN
DANGER! Use of acids, toxic or corrosive chemicals, poisons, insecticides or any
kind of flammable solvent with this product could result in serious injury or death.
1. Wear protective clothing to protect eyes and skin from contact with
sprayed materials.
2. DO NOT use acids, gasoline, kerosene or any other flammable materials in this
product. Use only household detergents, cleaners and degreasers
recommended for use in pressure washers.
3. Never use a powder type detergent or chemical that is not manufactured for
pressure washer use, i.e. dish detergent, laundry soap.
4. DO NOT use chlorine bleach or any other corrosive compound.

8664385 1.6 GPM @ 1,950 PSI Gas Pressure Washer V 4.0
8 For technical questions call 1-800-665-8685
UNPACKING
WARNING! Do not operate the tool if any part is missing. Replace the
missing part before operating. Failure to do so could result in a malfunction
and personal injury.
Remove the parts and accessories from the packaging and inspect for damage.
Make sure that all items in the parts list are included.
Contents:
• Pressure Washer • Gun Wand
• 25 ft PVC hose • 3 Nozzles (Soap, 0°, 25°)
ASSEMBLY & INSTALLATION
Your pressure washer requires some assembly. The pressure washer will also
requires fuel before it is ready for use.
BEFORE THE FIRST USE
The engine will require fuel before using the pressure washer for the first time.
Consult the included Engine Manual’s Care & Maintenance section for instructions
on how to add fuel to the engine.
ATTACHING HIGH PRESSURE HOSE TO SPRAY GUN
1. Pull back the quick connect collar at the end of the high pressure hose and
connect to the quick connect fitting on the spray gun. Pull the high pressure
hose and the spray gun in opposite directions to ensure they do not separate.
2. Connect the spray wand to the spray gun by threading it into place. Secure
hand tight.
3. Connect the water source.
a. Before connecting a garden hose to pump inlet, inspect the inlet screen.
Clean the screen if it contains debris or replace it if damaged. DO NOT
run pressure washer if inlet screen is damaged.
b. Run water through your garden hose for 30 seconds to clean out any debris.
IMPORTANT! DO NOT siphon standing water for the water supply.
Use only clean, cold water (less than 100 °F).

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c. Connect the garden hose (not to exceed 50 feet in length and with the
ID no less than 13 mm) to the water inlet. Tighten by hand.
d. Attach the other end of high pressure hose to the high pressure outlet on
the pump. Pull on hose to ensure a tight connection.
e. Turn the water on, release the trigger lock, then squeeze the trigger to
purge the pump system of air and impurities.
4. There MUST be at least 10 ft (3 m) of unrestricted garden hose between the
pressure washer inlet and any device, such as a vacuum breaker or check valve.
PRESSURE WASHER LOCATION
CLEARANCES AND AIR MOVEMENT
WARNING! Exhaust heat and gases can ignite combustibles, structures or
damage the fuel tank, causing a fire. Keep at least 3 ft (1 m) clearance on
all sides of pressure washer including overhead.
IMPORTANT! Consult the Safety Precautions in the included Engine manual.
1. Only operate the pressure washer outdoors.
2. Place the pressure washer in a well ventilated area that will remove exhaust
gas and prevent it from accumulating into the area.
3. Ensure the exhaust gas does not enter a confined area through windows,
doors, ventilation intakes or other openings.
4. Take prevailing winds and air currents into account.
OPERATION
HOW TO START YOUR PRESSURE WASHER
WARNING! Risk of eye injury. Spray can splash back or propel objects.
Always wear safety goggles when using this equipment or in the vicinity
where this equipment is in use.
IMPORTANT! The red trigger lock must be in place to prevent accidental
activation of the water pressure gun. Flip the red lever on the trigger up so
it rests in the depression in the handle. Aim the spray gun in a safe
direction and test the trigger to ensure the lock is working.

8664385 1.6 GPM @ 1,950 PSI Gas Pressure Washer V 4.0
10 For technical questions call 1-800-665-8685
To start your pressure washer for the first time, follow these instructions step-by-
step. This starting information also applies if you have let the pressure washer sit
idle for at least a day.
1. Place pressure washer near an outside water source capable of supplying
water at a flow rate greater than 3.2 gallons per minute (12.1 litres per minute)
and no less than 30 PSI at the pressure water pump inlet.
a. Place the water hose in a pail (1 gallon or 3.78 litres) and time how long
it takes to fill. The pail must be filled in 18 seconds or less to supply the
minimum water to the pump on this pressure washer.
2. Check that high pressure hose is tightly connected to the spray gun and
the pump.
3. Make sure unit is in a level position.
4. Uncoil high pressure hose completely before using the pressure washer.
5. Connect the garden hose to pump’s water inlet.
6. Remove the spray gun from its holder and engage the spray gun trigger lock if
not already set.
a. Press a thumb against the back of the trigger to prevent it from moving.
b. Pull the red trigger lock lever upwards.
c. Release the thumb pressure and guide the trigger lock into the handle
depression. Aim spray gun in a safe direction and pull trigger to test if the
lock is working.
NOTICE! DO NOT run the pump without the water supply connected and
turned on. This may damage the pump mechanism beyond repair.
7. Insert the nozzle into the end of the wand. See Pressure Nozzle Selection for
full instructions on choosing and connecting a nozzle.
8. Prime the pump and purge air from the system by squeezing the gun trigger
after hooking the unit to a water source. Let the water flow from the wand until
air and impurities are purged from the system.
9. Start the engine per Operations instruction in the Engine manual.
a. The engine may fail to run. Before the next attempt to start the engine,
aim the spray gun in a safe direction and squeeze the trigger to release
built up pressure.

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HOW TO STOP YOUR PRESSURE WASHER
IMPORTANT! The spray gun can trap high pressure water, even when engine
is stopped and disconnected from the water source.
1. Release the spray gun trigger.
2. Move the engine’s throttle lever to the MIN. position, the engine switch to the
OFF position and the fuel valve to the OFF position. Consult the Engine manual
for complete instructions.
a. Turn the engine switch to the OFF position to stop the engine in
an emergency.
3. Aim the spray gun in a safe direction and squeeze spray gun trigger to release
retained high pressure water.
4. Set the trigger lock.
PRESSURE NOZZLE SET UP
1. Turn off the pressure washer and release pressure in the system before
attempting to change the pressure nozzle.
2. Pull the spray wand’s quick coupler collar back.
a. The quick coupler collar is automatically retracted without a pressure
nozzle inserted in the wand.
3. Place one of the three quick-connect pressure nozzles into the wand’s
quick coupler.
4. Check the position of the pressure nozzle’s opening. This will determine the
spray angle when the spray gun is held in a level position.
5. Press down on the nozzle. The collar will snap forward with a loud click. The
nozzle is locked in place.
6. Pull the high pressure nozzle and spray wand in opposite directions to
ensure they do not separate.
PRESSURE NOZZLE SELECTION
The pressure washer has three spray nozzles. Each nozzle is color coded and
delivers a specific spray arc between 0° and 65°. The narrower the degree arc,
the higher the pressure at the water spray’s point of contact with the item being
cleaned. Distance from the item that is being sprayed will also factor into the
pressure level at the point of contact.

8664385 1.6 GPM @ 1,950 PSI Gas Pressure Washer V 4.0
12 For technical questions call 1-800-665-8685
The table identifies the colour, arc and an example. The example is only a
suggestion as some items are made of multiple materials and not all materials will
withstand the force of the pressurized spray. Choose the nozzle with the largest
spray arc, if you are unsure how much pressure to apply to an item without
damaging it. Switch to a nozzle with a narrower degree angle until you find the one
that achieves the results you want.
SPRAYING
1. Ensure there are no bystanders, animals or plants that could be injured or
damaged by the direct or deflected spray. Also check that there are no objects
that may be damaged.
2. Follow the instructions to start the engine.
3. Free the trigger lock and press into place on the trigger.
4. Release pressure from the pressure washer’s system.
5. Use low pressure to wash items such as a car or boat. Use higher pressure to
strip paint and degrease driveways.
a. Increase the spray pressure by turning the pressure control knob
clockwise (+). Decrease spray pressure by turning the pressure control
knob counterclockwise (-).
6. Stand far back from the item that you wish to spray. This will reduce the force
of the water at the point of contact.
a. Spray a small area and then check the surface for damage. If no damage
is found continue spraying.
b. Slowly move forward while spraying. Stop when you have the desired
result or if the spray is damaging the item.
Colour Arc Example
Red 0° Narrow stream to clean and remove embedded grit
or grime from concrete or brick surfaces.
Green 25° Clean wood surfaces compacted dirt, paint, oil or
mildew. Also for use with chemicals.
Black 65° (Soap) Wet surfaces or apply chemicals/detergents. Does
not provide enough force to clean by itself.

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c. Adjust the water pressure using the Pressure Adjusting Knob.
d. Consider using a pressure tip with a wider arc if there is not enough
room to stand further away. This will have less force and allow you to be
closer to the item.
7. Aim at an angle that will allow the water to deflect off the object and not back
at yourself. A 45° degree angle is a good starting point.
8. Squeeze the trigger fully and spray the object. Continue until the task
is complete.
a. If you must stop for more than a few moments before completing the task,
stop the engine and release pressure from the pressure washer’s system.
9. Spray from the bottom up when cleaning and from the top down when rinsing
to reduce water marks or streaks.
APPLYING CHEMICALS OR DETERGENTS
WARNING! Follow all safety precautions for the chemical or cleaning
solution when handling and spraying. Consult the Material Safety Data
Sheet for the product if available.
The pressure washer can spray a mixture of water and chemicals or detergents.
The chemical or detergent is siphoned into the pump outlet and is mixed during
spraying. Only use the soap pressure nozzle (black) as it is designed for mixing
the solutions.
1. Prepare the chemical or detergent per the instructions with the product.
2. Press the open end of the siphon hose onto the barbed detergent injector
fitting located on the pump.
3. Press the siphon hose with the filter attachment into the container holding
chemical or detergent. Make sure the filter is fully submerged in the solution to
avoid drawing air into the system.
4. Install the soap pressure nozzle (black).
5. Start the pressure washer as instructed in this manual and the Engine manual.
6. Spray the solution following the instructions in the Spraying section.
7. Apply solution to a dry surface, starting at the lower portion of area to be
washed and work upward, using long, even, overlapping strokes.

8664385 1.6 GPM @ 1,950 PSI Gas Pressure Washer V 4.0
14 For technical questions call 1-800-665-8685
a. Allow detergent to soak in for 3 to 5 minutes before washing and rinsing.
Reapply as needed to prevent the surface from drying. DO NOT allow
detergent to dry on (prevents streaking).
b. Consult the chemical instructions to determine if it should be rinsed off
and the time needed to soak before rinsing.
8. Clean the pressure washer after using chemicals or detergents by placing the
filter end of the siphon hose in a container of clean water. Turn on the pressure
washer at low pressure and spray to draw clean water through the system to
flush it out. This will take 1 to 2 minutes.
CARE & MAINTENANCE
1. Maintain the tool with care. A tool in good condition is efficient, easier to
control and will have fewer problems.
2. Inspect the tool fittings, alignment and hoses periodically. Have damaged or
worn components repaired or replaced by an authorized technician. Only use
identical replacement parts when servicing.
3. Only use accessories intended for use with this tool.
4. Keep the tool handles clean, dry and free from oil/grease at all times.
5. Maintain the tool’s labels and name plates. These carry important information.
If unreadable or missing, contact Princess Auto Ltd. for replacements.
WARNING! Only qualified service personnel should repair the tool. An
improperly repaired tool may present a hazard to the user and/or others.
CHECK HIGH PRESSURE HOSE
WARNING! NEVER repair the high pressure hose. Repairs can fail and will be
weaker than the hose itself. A hose that fails while under pressure can
inflict a serious injury. Replace with a hose that has a maximum pressure
rating that exceeds the pressure washer’s maximum output.
The high pressure hose can develop leaks due to wear, kinking or misuse and
abuse. Inspect the hose each time before using it. Check the hose for cuts, leaks,
abrasions or bulging spots. Also check the couplings to ensure they are not loose.
Replace the hose immediately if any of these conditions exist.

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CHECK SIPHON HOSE
1. Examine the filter on the detergent tube and clean if clogged.
2. The tube should fit tightly on the barbed fitting.
3. Examine the tube for leaks or tears. Replace the filter or tube if either
is damaged.
CHECK SPRAY GUN
Examine the hose connection to the spray gun and make sure it is secure. Check
that the trigger lock is in place to prevent accidental spraying. Replace the spray
gun immediately if the trigger lock is damaged or will not remain in place.
CHECK SPRAY WAND AND PRESSURE NOZZLES
A pulsing sensation felt when squeezing the trigger indicates either the spray
wand or the pressure nozzle is partially clogged and is causing pressure to build
in the pump.
1. Shut off the engine and turn off the water supply. Then release the pressure in
the pump system by aiming the spray gun in a safe direction and squeezing
the trigger.
2. Remove the spray nozzle from the end of spray gun wand.
3. Use a small paper clip to free any foreign material clogging or restricting the
spray nozzle.
4. Disconnect the spray gun wand and check for foreign material that may clog
the tube.
5. Remove additional debris by back flushing water through the spray gun wand
using a garden hose.
6. Reinstall spray nozzle into spray gun wand.
7. Reconnect spray gun wand to spray gun.
8. Make sure the garden hose is connected to the pump’s water inlet. Check that
high pressure hose is connected to spray gun and pump. Turn on the water.
9. Start engine following instructions How to Start Your Pressure Washer
10. Test the pressure washer with each of the three spray nozzles to ensure they
are all unclogged.

8664385 1.6 GPM @ 1,950 PSI Gas Pressure Washer V 4.0
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CHANGING THE PUMP OIL
Change the pump oil after the first 50 hours of operation. Then change the oil every
100 hours or 3 months, whichever occurs first.
When changing pump oil, use only high quality pump oil or SAE 75W90. Use no
special additives.
Separate the pump from the engine to change the oil.
1. Remove the four screws connecting the pump to the engine.
2. Pull the pump away from the engine’s shaft and place the pump on a
flat surface.
3. Remove the four pump head screws with a hex wrench. Set the pump wrench
and screws aside.
4. Drain oil from the pump into an approved receptacle.
5. Fill the pump with universal pump oil or SAE 75W90, until level with the
internal disc.
6. Replace pump head and tighten screws with hex wrench.
7. Slide the pump onto the engine shaft and align the screw holes.
8. Insert and tighten the screws.
9. Wipe up any spilled oil.
ENGINE MAINTENANCE
See the Engine manual for instructions on how to properly maintain the engine.
CLEANING
Clean accumulated debris from the pressure washer’s muffler and cooling slots
daily to reduce the risk of overheating and ignition of the debris. Also check that
there is nothing blocking the linkage, spring and controls.
Use a damp cloth to wipe exterior surfaces clean. A soft bristle brush can loosen
caked on dirt, oil, etc. A vacuum cleaner will remove loose dirt and debris in difficult
to reach places.
Examine the screen on the pump water inlet. Clean it if the screen is clogged or
replace it if the screen is damaged.

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PRESSURE WASHER STORAGE
1. Disconnect the spray gun from the high pressure hose after the pressure
washer is cool and the water pressure is released.
2. Drain all water from the high pressure hose, coil it and store it.
3. Drain all water from the spray gun and spray wand by holding the spray gun in
the vertical position with nozzle pointed downward. Squeeze trigger to remove
fluids. Store in spray gun/hose holder.
4. Store siphon hose, high pressure hose and spray wand so they are protected
from damage.
PROTECTING INTERNAL SEALS
The internal seals require additional preparation if the pressure washer is stored for
more than 30 days or freezing temperatures are expected.
1. Be sure the machine is OFF, water supply is disconnected and pressure has
been relieved.
2. Obtain a one-gallon container or non-toxic Recreational Vehicle (RV)
antifreeze.
NOTICE! Only RV antifreeze is suitable. Other types of antifreeze are
corrosive and can damage the pressure pump.
3. Install a suction hose from the pump inlet (garden hose fittings) into the
antifreeze. Following operation instructions, start the engine and squeeze
trigger on spray gun allowing the pump to draw antifreeze through the entire
system. Once antifreeze appears at the end of wand, turn the engine off.
4. Squeeze gun trigger to relieve pressure.
5. Remove the garden hose from the water inlet of the pressure pump and seal
the pump’s inlet and outlet.
6. Wait for engine to cool, then remove the high pressure hose, wand gun
and store in a secure place with owner’s manual.
7. See engine owner’s manual for proper engine storage.
8. When preparing to operate the pressure washer again, reassemble the
hose, spray gun and wand. Reconnect the pressure washer to a water
supply, but do not start the engine. Squeeze the trigger and allow water to

8664385 1.6 GPM @ 1,950 PSI Gas Pressure Washer V 4.0
18 For technical questions call 1-800-665-8685
pass through the system. The pressure washer is ready for use when the
water passing through the wand tip becomes clear.
9. See engine owner’s manual for preparing engine after storing.
DISPOSAL
Recycle a tool damaged beyond repair at the appropriate facility.
Contact your local municipality for a list of disposal facilities or by-laws for
electronic devices, batteries, oil or other toxic liquids.
IMPORTANT! DO NOT pollute the environment by allowing uncontrolled
discharge of waste oil.

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TROUBLESHOOTING
Visit a Princess Auto Ltd. location for a solution if the tool does not function
properly or parts are missing. If unable to do so, have a qualified technician
service the tool.
Problem(s) Possible Cause(s) Suggested Solution(s)
No pressure or
Low pressure.
1. Spray gun not set to high
pressure.
2. Lower water supply.
3. Hose fitting leaks during
high pressure.
4. Nozzle obstructed.
5. Water filter screen
obstructed.
6. Defective thermal relief
valve.
7. Air in hose.
8. Choke lever in choke
position.
9. Throttle control lever is hot
in fast position.
10. High pressure hose too
long.
1. See Spraying section.
2. Water supply must be 3.2 GPM @ 30 to
60 PSI.
3. Tighten hose fitting. Use thread sealant
tape if necessary.
4. Clean nozzle of debris.
5. Remove and clean filter.
6. Replace the thermal relief valve or have a
qualified technician repair it.
7. Stop engine and water source. Disconnect
water source from pump inlet and turn
water source to ON to remove all air from
hose. When steady stream of water is
present, turn water source to OFF. Re-
connect water source to pump inlet and
turn on water source. Squeeze trigger to
remove remaining air.
8. Move choke to the OPEN position.
9. Move throttle control lever from fast
position.
10. Use hose under 100 ft.
Pump will not
draw chemical
or detergent.
1. Spray gun not set to low
pressure.
2. Chemical filter clogged.
3. Chemical screen not fully in
chemical.
4. Chemical solution too thick.
5. Pressure hose too long
6. Chemical build-up in
chemical injector.
1. See Check Spray Wand and Pressure
Nozzles section.
2. Clean Filter.
3. Ensure end of siphon hose is fully
submerged into chemicals.
4. Dilute chemical. Chemical solutions
should have same consistency as water.
5. Lengthen water supply hose instead of
pressure hose.
6. Have parts cleaned or replaced.

8664385 1.6 GPM @ 1,950 PSI Gas Pressure Washer V 4.0
20 For technical questions call 1-800-665-8685
Problem(s)
Possible Cause(s)
Suggested Solution(s)
No or low
pressure (after
period of
normal use).
1. Worn seal or packing.
2. Worn or obstructed
valves.
3. Worn unloader piston.
Have parts cleaned or replaced by
authorized dealer.
Water leaking
at spray
gun/spray
wand
connection.
1. Worn or broken O-ring.
2. Loose hose connection.
1. Check and replace O-ring.
2. Tighten hose connection.
Water leaking
at pump.
1. Loose connections.
2. Piston packing is worn.
3. Worn or broken O-
rings.
4. Pump head or tubes
damaged from freezing.
1. Tighten connections.
2-4. Have parts cleaned or replaced by
authorized dealer.
Oil leaking at
pump.
1. Oil seals worn.
2. Loose drain plug.
3. Worn drain plug O-ring.
4. Worn fill plug O-ring.
5. Pump overfilled.
6. Incorrect oil used.
7. Vent plug clogged.
1. Have parts cleaned or replaced by
authorized dealer.
2. Tighten drain plug.
3. Inspect and replace O-ring.
4. Inspect and replace O-ring.
5. Check for correct amount.
6. Drain and refill with correct type and
amount of oil.
7. Clean vent plug. Use air hose to free it of
blockage. If problem persists, replace
vent plug.
Pump
pulsates.
Nozzle obstructed.
See Check Spray Wand and Pressure
Nozzles section.
No low
pressure
detergent
delivery.
1. Nozzle set on high
pressure.
2. Detergent adjustment is
closed or soap hose is
plugged.
3. Incorrect nozzle size.
1. Replace with brass soap nozzle.
2. Turn adjustment knob. counterclockwise
to open or unplug soap hose.
3. Install correct brass soap nozzle.